| Main Title |
Optimum Frequency of Calibration Monitoring. |
| Author |
Yfantis, E. A. ;
Flatman, G. T. ;
Garner, F. C. ;
|
| CORP Author |
Lockheed Engineering and Management Services Co., Inc., Las Vegas, NV. ;Nevada Univ., Las Vegas.;Environmental Monitoring Systems Lab., Las Vegas, NV. |
| Year Published |
1988 |
| Report Number |
EPA-68-03-3249; EPA/600/J-88/021; |
| Stock Number |
PB88-219233 |
| Additional Subjects |
Calibrating ;
Standards ;
Reprints ;
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB88-219233 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
8p |
| Abstract |
The paper develops an algorithm by which to compute the optimal frequency of calibration monitoring to minimize the total cost of analyzing a set of samples and the required calibration standards. Optimum calibration monitoring is needed because of the high cost and calibration drift of the analyzing equipment. Gas chromatographs with mass spectroscopy equipment give trace analyses with previously unattainable precision, accuracy, and speed of turn-around when properly calibrated and systematically monitored. Calibration monitoring is done by including a known standard every fixed number of samples. Currently, this fixed number, or calibration monitoring frequency, is arbitrarily chosen; however, the paper gives a method to compute the optimal calibration monitoring frequency so that the total analyses costs for both samples and standards will be minimized. (Copyright (c) 1988 Elsevier Science Publishers B.V.) |
